21-05-2015 дата публикации
Номер: US20150141237A1
Принадлежит:
A catalyst for selective catalytic reduction of NOhaving one or more transition metals selected from Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir, Pt, and mixtures thereof supported on a support, wherein the support has a molecular sieve having at least one intergrowth phase having at least two different small-pore, three-dimensional framework structures. 1. A catalyst for selective catalytic reduction of NOcomprising:a. one or more transition metals selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir, Pt, and mixtures thereof, andb. a support comprising an aluminosilicate, a silico-aluminophosphate, or aluminosilicate/silico-aluminophosphate molecular sieve having an intergrowth phase comprising an AEI framework,wherein the one or more transition metals are disposed inside the pores of the molecular sieve, on the external surface of the molecular sieve, or both inside the pores and on the external surface of the molecular sieve, andwherein said transition metal is present in an amount of about 0.01 to about 6 weight percent, based on the total weight of the molecular sieve.2. The catalyst of claim 1 , wherein the AEI framework structure is present in a ratio of about 1:99 to 99:1 with respect to other frameworks in the molecular sieve.3. The catalyst of claim 1 , wherein the AEI framework structure is present in a ratio of about 5:95 to about 15:85 with respect to other frameworks in the molecular sieve.4. The catalyst of claim 1 , wherein the molecular sieve is an aluminosilicate.5. The catalyst of claim 1 , wherein the molecular sieve is a silico-aluminophosphates.6. The catalyst of claim 1 , wherein said transition metal is selected from the group consisting of Cu claim 1 , Fe claim 1 , Co claim 1 , Pt claim 1 , and Mn.7. The catalyst of claim 1 , wherein said transition metal is Cu.8. The catalyst of claim 1 , wherein said transition metal is present in an amount of about 1 to ...
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